
.box {
  width: 800px;
  height: 400px;
  border: 1px solid #f2f2f2;
  display: flex;
  .left{
    white-space: break-spaces;
    background-color: cornflowerblue;
  }
  .right{
    flex: 1;
    background-color: lavender;
  }
  .line {
    padding: 0 5px;
    cursor: col-resize;
    .line-box{
      width: 2px;
      height: 100%;
      background-color: #ccc;
    }
  }
}
